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They will push 8-10# in stock configuration on a 4.6 (289) Smaller blower pulley and 14-16# is common place. Unported 115-118 mph trap speeds are normal, Ported add 5 mph.

Should make a 5.7 run pretty hard, if you can get the piston to live. You need EFI to feed it though.




was toying with the idea of using the lightning style with plenum opening on the top and modding it for a carb




The Cobra Eaton is an M112 (112 CI displacement), the newer GT500's (and maybe Lightnings?)are M122's. The GT500 blower inlet is on the driver side. I have an 04 Cobra and have a ported Eaton sitting on the bench awaiting install, do you work for a well known company Ray? 525-550 RWHP depending on fuel and boost is basically maxing a 112, the 122 is probably worth another 40-50, and more torque low as the inlet is alot larger.


11.48 @ 120 with a 1.80 60' 318, stock 1.88 heads, stock 904, Pump Gas, 13 lbs of boost.

9.94 @ 134, 318 on pump gas, 14 lbs w/ Eddies, transbrake 727, 3600 lbs, 3.54 gear and 28's.